|Efficiency of Transportation Alternatives|
Many forms of transit are much less efficient than commonly believed. Rail and bus transit systems make many stops, requiring re-acceleration of massive vehicles which weigh at least 10X more than the passengers. (A bicycle, by contrast, is a small fraction of the cyclist's weight).
This applies as well to the electric vehicle. Even though its motor is much more efficient than the internal combustion engine, it still weighs as much as (and potentially more than) a fueled vehicle. (The GM EV1 was an exception, of course, being an extremely aerodynamic vehicle.)
Combining fuel-to-wheel efficiency (10%-20%) and passenger:vehicle weight ratio (1:10), an automobile, train or bus is likely to be on the order of 10%-20% (fuel-wheel) ÷ 10 (weight) = 1%-2% efficient. And this is the state of the art in the 21st century?!
Move less mass!
|Mode||Load (#pass)||BTU's /pass-mile||Watt-hrs /pass-mile||FTE*||Gas mpg||Diesel mpg||km/liter|
|Solar Race Cars||1||102||30||2.8||1119||1359||577|
|Rail, Transit (light & heavy)||22.50||2,784||819||77||41||50||21|
|Demand response (Taxi)||1.0||14,301||4207||396||8||10||4|
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